Journal
EUROPEAN JOURNAL OF ENTOMOLOGY
Volume 98, Issue 2, Pages 127-132Publisher
CZECH ACAD SCI, INST ENTOMOLOGY
DOI: 10.14411/eje.2001.023
Keywords
carabids; conservation; dispersal; forests; habitat fragmentation; habitat heterogeneity; metapopulations; species richness; generalists; specialists
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I review the effects of habitat fragmentation on carabid beetles (Coleoptera, Carabidae) and examine whether the taxon could be used as an indicator of fragmentation. Related to this, I study the conservation needs of carabids. The reviewed studies showed that habitat fragmentation affects carabid assemblages. Many species that require habitat types found in interiors of fragments are threatened by fragmentation. On the other hand, the species composition of small fragments of habitat (up to a few hectares) is often altered by species invading from the surroundings. Recommendations for mitigating these adverse effects include maintenance of large habitat patches and connections between them. Furthermore, landscape homogenisation should be avoided by maintaining heterogeneity of habitat types. It appears that at least in the Northern Hemisphere there is enough data about carabids for them to be fruitfully used to signal changes in land use practices. Many carabid species have been classified as threatened. Maintenance of the red-listed carabids in the landscape requires species-specific or assemblage-specific measures.
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